Python 文件列表

Question

我正在尝试查找以 'msCam' 开头并以扩展名“.avi”结尾的文件夹中的所有文件。我设法使用以下代码做到这一点：

path = path_to_analyze
files = [i for i in os.listdir(path) if os.path.isfile(os.path.join(path,i)) and \
         'msCam' in i]
print(len(files))
for file in files:
        if file.endswith(".avi"):
            msFileList = [os.path.join(path, file)]
            print(msFileList)

但这只存储在给定 'msFileList' 变量中找到的最后一个文件。

print(msFileList)

如何传递所有要存储的文件？

Answer 1

您的列表在每次迭代中都会被最新值覆盖。您必须使用内置的 .append() 方法。

path = path_to_analyze
files = [i for i in os.listdir(path) if os.path.isfile(os.path.join(path,i)) and \
         'msCam' in i]
print(len(files))

msFileList = [] # filenames will be appended in this list
for file in files:
        if file.endswith(".avi"):
            msFileList.append(os.path.join(path, file)) # using .append()
            # print(msFileList)

print(msFileList) # Whole List will be printed

Answer 2

path = path_to_analyze
files = [i for i in os.listdir(path) if os.path.isfile(os.path.join(path,i)) and \
     'msCam' in i]
msFileList = [] #create and empty list
print(len(files))
for file in files:
    if file.endswith(".avi"):
        msFileList.appened(os.path.join(path, file)) #append result to list

print(msFileList)

Answer 3

这是否符合您的要求？

filepath = './'
matching_files = []
with os.scandir(filepath) as entries:
    for entry in entries:
        if entry.name.startswith('msCam') and entry.name.endswith('.avi'):
            matching_files.append(entry.path+entry.name)

Python 文件列表

Python file listing

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